(S) (SI units) Peripheral milling is performed on the top surface of a rectangular work part that is400 mm long by 50 mm wide. The milling cutter is 70 mm

in diameter and has five teeth. It overhangs the width of the part on both sides. Cutting speed = 60 m/min, chip load = 0.25mm/tooth, and depth of cut = 6.5 mm. Determine (a) machining time of the operation and (b)maximum material removal rate during the cut.